add rudimentary logic for text segmentation in lemmatizer

[scpubgit/stemmatology.git] / stemmaweb / lib / stemmaweb / Controller / Relation.pm

diff --git a/stemmaweb/lib/stemmaweb/Controller/Relation.pm b/stemmaweb/lib/stemmaweb/Controller/Relation.pm
index 00c97eb..2671473 100644 (file)
--- a/stemmaweb/lib/stemmaweb/Controller/Relation.pm
+++ b/stemmaweb/lib/stemmaweb/Controller/Relation.pm
@@ -29,6 +29,19 @@ sub index :Path :Args(0) {
        $c->stash->{'template'} = 'relate.tt';
 }
 
+=head2 help
+
+ GET relation/help
+
+Returns the help window HTML.
+
+=cut
+
+sub help :Local :Args(0) {
+       my( $self, $c ) = @_;
+       $c->stash->{'template'} = 'relatehelp.tt';
+}
+
 =head2 definitions
 
  GET relation/definitions
@@ -56,33 +69,66 @@ sub definitions :Local :Args(0) {
 
 sub text :Chained('/') :PathPart('relation') :CaptureArgs(1) {
        my( $self, $c, $textid ) = @_;
-       $c->stash->{'tradition'} = $c->model('Directory')->tradition( $textid );
+       # If the tradition has more than 500 ranks or so, split it up.
+       my $tradition = $c->model('Directory')->tradition( $textid );
+       my $length = $tradition->collation->end->rank;
+       if( $length > 700 ) {
+               # Segment the tradition in order not to overload the browser.
+               # Split it up into units of 500 ranks, but have each segment show
+               # 550 ranks so that overlap works.
+               my @divs;
+               my $r = 0;
+               while( $r + 50 < $length ) {
+                       push( @divs, $r );
+                       $r += 500;
+               }
+               $c->stash->{'textsegments'} = [];
+               foreach my $start ( @divs ) {
+                       my $seg = { 'start' => $start };
+                       $seg->{'end'} = $start + 550 > $length ? $length : $start + 550;
+                       push( @{$c->stash->{'textsegments'}}, $seg );
+               }
+       }
+       $c->stash->{'textid'} = $textid;
+       $c->stash->{'tradition'} = $tradition;
 }
 
 sub main :Chained('text') :PathPart('') :Args(0) {
        my( $self, $c ) = @_;
+       my $startseg = $c->req->param('start');
        my $tradition = delete $c->stash->{'tradition'};
        my $collation = $tradition->collation;
-       my $svg_str = $collation->as_svg;
+       my $svgopts;
+       if( $startseg ) {
+               # Only render the subgraph from startseg to +500 or end,
+               # whichever is less.
+               $svgopts = { 'from' => $startseg };
+               $svgopts->{'to'} = $startseg + 550
+                       if $startseg + 550 < $collation->end->rank;
+       } elsif( exists $c->stash->{'textsegments'} ) {
+               # This is the unqualified load of a long tradition. We implicitly start 
+               # at zero, but go only as far as 550.
+               $svgopts = { 'to' => 550 };
+       }
+       my $svg_str = $collation->as_svg( $svgopts );
        $svg_str =~ s/\n//gs;
        $c->stash->{'svg_string'} = $svg_str;
        $c->stash->{'text_title'} = $tradition->name;
        $c->stash->{'template'} = 'relate.tt';
-
 }
 
 =head2 relationships
 
- GET $textid/relationships
+ GET relation/$textid/relationships
 
 Returns the list of relationships defined for this text.
 
- POST $textid/relationships { request }
+ POST relation/$textid/relationships { request }
  
 Attempts to define the requested relationship within the text. Returns 200 on
 success or 403 on error.
 
- DELETE $textid/relationships { request }
+ DELETE relation/$textid/relationships { request }
  
 
 =cut
@@ -91,14 +137,17 @@ sub relationships :Chained('text') :PathPart :Args(0) {
        my( $self, $c ) = @_;
        my $tradition = delete $c->stash->{'tradition'};
        my $collation = $tradition->collation;
+       my $m = $c->model('Directory');
        if( $c->request->method eq 'GET' ) {
                my @pairs = $collation->relationships; # returns the edges
                my @all_relations;
                foreach my $p ( @pairs ) {
                        my $relobj = $collation->relations->get_relationship( @$p );
-                       push( @all_relations, 
-                               { source => $p->[0], target => $p->[1], 
-                                 type => $relobj->type, scope => $relobj->scope } );
+                       next if $relobj->type eq 'collated'; # Don't show these
+                       my $relhash = { source => $p->[0], target => $p->[1], 
+                                 type => $relobj->type, scope => $relobj->scope };
+                       $relhash->{'note'} = $relobj->annotation if $relobj->has_annotation;
+                       push( @all_relations, $relhash );
                }
                $c->stash->{'result'} = \@all_relations;
        } elsif( $c->request->method eq 'POST' ) {
@@ -110,10 +159,12 @@ sub relationships :Chained('text') :PathPart :Args(0) {
        
                my $opts = { 'type' => $relation,
                                         'scope' => $scope };
+               $opts->{'annotation'} = $note if $note;
                
                try {
                        my @vectors = $collation->add_relationship( $node, $target, $opts );
                        $c->stash->{'result'} = \@vectors;
+                       $m->save( $tradition );
                } catch( Text::Tradition::Error $e ) {
                        $c->response->status( '403' );
                        $c->stash->{'result'} = { 'error' => $e->message };
@@ -124,6 +175,7 @@ sub relationships :Chained('text') :PathPart :Args(0) {
        
                try {
                        my @vectors = $collation->del_relationship( $node, $target );
+                       $m->save( $tradition );
                        $c->stash->{'result'} = \@vectors;
                } catch( Text::Tradition::Error $e ) {
                        $c->response->status( '403' );